RE: + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree

[Pallipadi, Venkatesh]

>-----Original Message-----
>From: Pavel Machek [mailto:pavel@xxxxxx] 
>Sent: Wednesday, December 05, 2007 3:17 AM
>To: Pallipadi, Venkatesh
>Cc: Andrew Morton; lkml@xxxxxx; abelay@xxxxxxxxxx; 
>lenb@xxxxxxxxxx; mlord@xxxxxxxxx; rjw@xxxxxxx; 
>linux-kernel@xxxxxxxxxxxxxxx; linux-acpi@xxxxxxxxxxxxxxx
>Subject: Re: + restore-missing-sysfs-max_cstate-attr.patch 
>added to -mm tree
>
>Hi!
>
>> >It is not known whether Mark is actually writing to this 
>> >thing.  Perhaps
>> >read-only permissions would be a suitable fix?
>> >
>> 
>> Exporting it as read only should be OK. We also need to know if there
>> are hard user space dependency on writing to this from userspace.
>
>Some people are manipulating it from their suspend scripts..
>

That is done by default in kernel now. Deep C-states are disabled
between suspend and resume.

Thanks,
Venki
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